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Finding the Fourth Proportional to 48,495.90, 66,914.34 and 28,348.89

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Solution

The fourth proportional to 48,495.90, 66,914.34 and 28,348.89 is: 39,115.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,495.90 : 66,914.34 = 28,348.89 : x
  2. Step 2: Convert to fraction form
    48,495.90/66,914.34 = 28,348.89/x
  3. Step 3: Cross multiply
    48,495.90x = 66,914.34 × 28,348.89
  4. Step 4: Simplify right side
    48,495.90x = 1,896,947,264.08
  5. Step 5: Solve for x
    x = 1,896,947,264.08/48,495.90
  6. Step 6: Final answer
    x = 39,115.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.